HPC charging
HPC charging in the SpeicherCampus context: creates very high power peaks. Technically, the term is usually described as High Power Charging.
What does HPC charging mean?
High Power Charging refers to DC fast charging at high power — typically 150 to 400 kW per charging point. A single HPC dispenser draws as much power as a mid-sized business at peak; two occupied dispensers exceed many grid connections.
The load profile is characteristic: extremely steep, short peaks with pauses in between — made for battery buffering, because the storage system can recharge between sessions.
What matters in practice
- align storage power with the dispensers’ maximum simultaneity
- a high C-rate is required; capacity follows from charging frequency
- check the grid contract: HPC peaks drive the demand charge massively
- vehicle preconditioning and charging curves soften the real peak
Practical example
A service station plans two 300 kW HPC dispensers on a 250 kW connection. A storage system with 500 kW discharging power and 650 kWh (PotisMobile class) buffers the sessions and recharges overnight and between customers — the grid connection stayed untouched.
The SpeicherCampus perspective
SpeicherCampus calculates HPC projects from expected charging behaviour, not from dispenser nameplate ratings — the difference decides between an economical and an oversized solution.